Well if you're looking for trails Grayling is a good place to start. Lots of hills to climb in Camp Grayling and you could spend all day driving and still not see a fraction of the trails in the area. Once the snow starts flying and there is a good base on the trails the sleds take over until spring so get your trail riding in before that.
There is also an annual event called sno-blind that usually makes a 4x4 mag if you're interested.
http://www.mudchuggers.com/snowblindflyer.pdf
It's getting late to sign up but if you hurry you might still make it.
